Battery charger



FIG. 1 is a perspective view of a battery charger according to the invention.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left elevational view thereof.

FIG. 5 is a right elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a battery charger, as shown and described. 